The drug smuggling elements were creative and a lot more insightful than other drug movies tend to be.
As far as the Ferrari. It was ridiculous but it was one of those unrealistic things that are thrown in for show rather than portraying an element of reality. This wasn't one of those movies and I didn't expect it to be, which is why I can't even critique all of the unprofessional and vigilante police work.
They have two Vice cops that suddenly get thrown in the mix as international FBI agents involved in mega drug smuggling, get tossed into the middle of South America based on the word of some small time snitch drug dealer and suddenly someone who's portrayed as a modern day Pablo Escobar trusts 2 Americans who no one knows with an assload of drugs. Somewhere along the line Collin Farrell who's character is completely empty falls in love with the bosses mistress who after a night of sex is ready to give him part of this business. Never mind the way it came about, "hey, we're in the middle of god knows where, let me buy you a drink", "ok sure! I know a good place, it's in Cuba, i just met you but lets hop in your speedboat and go on and fall in love by tomorrow!"... remember their conversation? "Probability is like gravity..." with that puzzled look on his face.. what the fuck was that?
bottom line, they tried too hard and fell way short of the hype.